Prior to the practice of completing the TCP/IP-based socket client-server communication, but each time you open the DOS box, enter ipconfig to query the local IP information,
Always show "' ipconfig ' is not an internal or external command, nor is it a running program ... "Such a mistake. At first thought it was a computer problem, restart several times the computer, found that the result is still the case,
Therefore, in the online query reasons, Kung fu is not a conscientious, finally found a solution, the bottom will be shared, for the same doubts of the small partners reference.
"' ipconfig ' is not an internal or external command or a running program" error message when you enter command ipconfig in the console.
This may be due to the absence of environment variable settings.
WORKAROUND: Reset the system variable in the environment variable, add the content "; C:\Windows\System32" in Path or path.
Reference from: http://jingyan.baidu.com/article/1876c852af48b7890b1376ee.html
"' ipconfig ' is not an internal or external command, nor is it a running program ... "The workaround